I don't think that E3 remembers rain.
I don't remember the last time that he saw rain.
It rained once on our vacation, but he was asleep at the time, so he missed it.
Today, I looked at the rain through his eyes.
He asked to go outside in the rain. I obliged. He got his jacket and hat, and actually wore shoes.
It's not as if I was going to melt or anything. We played in the sandbox, got soaked, but had fun.